Questions tagged [video]

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Why does my Dell laptop monitor give this weird color banding?

I've noticed some very obvious color banding on the screen of my Dell Precision 7750 laptop while watching video (same in every video program; VLC, built-in Windows video player, etc.) Not only does ...
Jez's user avatar
  • 101
0 votes
1 answer
53 views

Animated rainbow distortion wave effect

https://foundation.app/mg/20210227-3lau-makes-history-1790 The link above shows a video animation that has a rainbow wave distortion effect applied to it, that ripples across the video. how, and in ...
user610620's user avatar
0 votes
0 answers
47 views

Building a higher-res detailed image from a video

I'd like to know if the following technology already exists, and if not, how feasible it would be to create something like this: I came up with an idea for creating a higher-res image that is put ...
Denis Savgir's user avatar
1 vote
1 answer
115 views

Is it possible to decode and play e.g. 60fps video as 30fps, if computer is too slow for 60fps?

I am wondering this, as e.g. YouTube offers some videos 60fps, but computer may be too slow to play them.
jarno's user avatar
  • 121
0 votes
0 answers
55 views

What fast algorithms can generate not-realistic but quite handsome animated landscapes?

I was looking for algorithms that quickly compute quite nice realistic, or not realistic, animated landscapes, in video format ("animated" = the camera moves, or the water is animated, etc.) But all I ...
JarsOfJam-Scheduler's user avatar
0 votes
1 answer
61 views

What would be an example of decoding-intensive video?

my question might come in a bit weird but I'm looking for something that would be considered very CPU-intensive video to decode (for playback I mean). I would like to have some sample of 1080p and 4k ...
graywolf's user avatar
  • 101
1 vote
2 answers
547 views

Rendering 3-D point clouds obtained from depth maps as a 2.5D video

Suppose I have code to generate a bunch of frames, each of which is a depth map(I have access to the matrices which represent depth) which in turn is used to generate a point cloud. One frame would ...
Ashish Rao M's user avatar
2 votes
0 answers
202 views

debugging VGA signal timings for 640x480 @ 60hz

I am trying to get started with implementing a basic display (i.e a simple red screen) onto a VGA monitor by programming a Xilinx spartan3a fpga for the same. I have studied about the signal timings ...
nalostta's user avatar
4 votes
1 answer
1k views

Non real-time rendering on Unity3D

I made an audio visualizer using Unity3D (you can see it here) but I am not satisfied on the video quality, as the compression destroys the graphics. I recorded the screen during a real-time rendering....
L. Chaumartin's user avatar
1 vote
0 answers
2k views

YUV (NV12) Chroma subsampling while converting from RGB image

I convert RGB input to YUV 420 semi-planar output using compute shader.Luma plane is straightforward as it maps 1:1 with RGB dimensions. As we know, NV12 packs Cb and Cr into one plane, which means ...
Michael IV's user avatar
1 vote
0 answers
143 views

Is 100 Hz really 100 Hz, or is it 99.97Hz

We are trying to check some hardware and our 100Hz video card is running at 99.97Hz. Maybe this is just the natural speed of the chip and it is called 100Hz. I would have thought, however, that ...
Jeff's user avatar
  • 11
5 votes
3 answers
773 views

Was Evans & Sutherland CT5 really created in 1981?

A few days ago I found a video on Twitter showing the Evans & Sutherland CT5 Flight Simulator system. It was labeled as 1981 footage and looked really amazing. The first time I saw similar 3D ...
Gonrah's user avatar
  • 53
2 votes
1 answer
153 views

A way to save 360° panorama video

What is the best way to save video from faces of a cube? The render can produce 6 squares (90°x90°) of 1024x1024 resolution. Faces oriented along axies and only position is changed continuously. I ...
Tomilov Anatoliy's user avatar
1 vote
0 answers
451 views

Streaming video camera input from WebCamTexture on mobile? (Possibly via WebRTC or websocket?)

I'm building an application where I stream video camera feed from one mobile device to another in Unity. I tried searching for answers, but most of the topics deal with how to display a video stream, ...
Apolotary's user avatar
2 votes
0 answers
165 views

Converting from 360 degree vr to rectangular

What I am interested in doing is taking a 360 degree stereo video (Oculus Rift etc), and a description of how the viewing direction changes with time (rather than reading from gyroscopes) and then ...
John Allsup's user avatar
7 votes
1 answer
201 views

What is the state-of-the-art on using computers to "clean-up" images?

TWO PART QUESTION - We've all seen the movies/TV shows where the police/feds/spies use computer software to take a grainy photo and do a "clean-up" to see a better picture and more details. I assume ...
O.M.Y.'s user avatar
  • 171
8 votes
3 answers
334 views

How to denoise video?

Video noise is random and not correlated in time. I assume, the best method is using wavelet denoise in this case, right? If yes, how is wavelet denoise implemented for video? Is there something to ...
p2or's user avatar
  • 596